Handle lock



Oct. 30, 1928. m U 1,689,875

'- E. N. JACOB] HANDLE LOCK Filed April 28, 1921 III A TORNEY PatentedGet. 3t), 1928.

UNITED STATES PA'IENT orricn.

EDWARD N. JACOBI, F MILVIAUKEE, WIEUONSIN, ASSIGNOR, BY MESNE ASSIGN-MENTS, TO BRIGGS & STRATTON CORPORATION OF DELAWARE.

GORIEOEATEON', OF MILWAUKEE, WISCONSIN, A.

HANDLE LOCK.

Application filed April This invention has for its object to pro vide alock suitable for use in combination with automobile door handles,electrical switch handles and the like, in which there is a handlemember for operating locking or switching or other mechanism and whichmay be rendered immovable by a lrey-controlled locking member.

The main object of the invention is to provide such a key controlledlocking member for devices of this character which may be placed in itslocking; condition without the use of the key. 7

A further object of the invention to simplify the construction to makeit inexpensive to manufacture and durable and .efiicient in use.

With the above and other objects in view the invention consists in thehandle lock as herein claimed and all equivalents.

Referring to the accompanying drawings in which like characters ofreference apply to the same parts in different views:

Fig. l is a central sectional view of a handle lock as applied to anautomobile door handle member and constructed in accordance with thisinvention;

Fig. 2 is an end. view thereof;

Fig. 3 is a sectional view through the locking bolt;

Fig. 4 is a sectional view through the tunibler cylinder;

Fig. 5 is a sectional view through the twirler;

Fig. 6 is a perspective view of the driver; and,

Fig. 'i' is a detail view showing the driver pin in the lock bolt slot.

In these drawings 10 indicates a base adapted to be attached to anautomobile door 11 in any desirable manner as by means of screws 12entering from the inner side of the door. The base forms-i a bearing fora door handle member 2-} having a square shank l t for operating theusual latch mechanisin not shown.

A cylindrical.loci-ting bolt '1 pass transversely through the handlemember 13 and is capable of pi'oje ting therefrom into engagement with aslot 16 in the base to prevent the turning of the handle. The movementsof this locking bolt are controlled by a lock cylinder 17 which isrotatably mounted in the handle and operates the locking bolt by 19m.Serial No. 465,166.

means of a cylii'idri al driver 18. The longitudinally positioned driver18 and the trans versely positioned lock bolt are so related thatturning movements of the former will produce reciprocation of thelatter. This is accomplished by means of a pin 19 pro jecting from theend of the driver 18 slightly eccentric thereto and fitting in atransverse slot 20 of the lockingbolt 15. The slot 20 does not extendentirely across the loci-Ling bolt but its end forms a stop againstwhich the pin 19 strikes for limitingthe turning movement of the driverto one-half of a turn.

The driving connection between the driver 18 and the loci: cylinder 17consists of a pair of lugs 21 projecting from the end of the driver andfitting within the hey slot which extends longitudinally through thelock cylinder.

ii. spring" 22 seat-ed in a pocket in the end of the driver 18 betweenthe lugs 21 bears on the end of the lock cylinder 17 and takes up allplay between the parts to prevent rattling, the driver 18 being thusheld against the locking bolt 15 and the lock cylinder 17 against aretaining; ring 23 which forms a bushing at the end of the handle memberthrough which the lock cylinder projects. A shoulder is formed on thelock linder to take this end thrust by its engagement with the retainingring.

A key 24', when entered through the key slot 22, is adapted to passthrough openings of a series of tumbler slides 25 fitting; in transverseslots of the lock cylinder and its opposite serrated edges are so formedto cause said tumblers to be contained with in the lock cylii'ider whenthe key is fully inserted. This enables the lock cylinder to be turnedby means of the hey so as to throw the locking bolt.

When the key is witlulrawn. however, which may he in either the lockingor um locking position of the locking bolt, the tu1nblers project intoopposite grooves 26 within the handle member. lVhen the hey is withdrmvn with the locking bolt in the locking position, the tumblersprojecting into the grooves 26 elli'ectively prevent the lock cylinderfrom being turned and therefore prevent the withdrawal of the lockingbolt. and consequently the handle n'ieinber cannot be turned to open thedoor.

When the grooves 26 are formed with parill) the slot ofthe locking boltis such that the lock cylinder may only have a half turn, and the camaction for returning the 'tumblers'to the lock cylinder takes/place onlyduring the ln' oyementof the lock cylinder from the position inwhiclith'e handle member is unlckcd to the position in which the handlemember is locked, It will be apparent that on completing the half turnof the lock cylinder in this direction the tumblers again enter thegroovesQb, but as no further movement in this direction is permitted bythe engagement of the eccentric pin 19 with the stop at the end" of theslot of the locking bolt, the cams 27 can'notbe made to again withdrawthe tumblers, andthe lock cylinder is effectively locked againstmovement in either direction. This movement of the lock bylinder underwhich the cams act to return the tumblers may be effected without thepresence ofthe keyby turning the projecting end of the lock, cylinder byhanchbut the handle member haying been locked by this action can only beunlocked, by inserting the key to withdraw the tumblers and thenturningthe key to withdraw the look ing bolt. i V

For conyenience in turning the projecting end of the lock cylinderbyhand itmay be provided with a serrated flange or twirler 28.

hen the locking bolt is withdrawn the handle may be freely turned tooperate the latch in the usual manner and when it is desired to lock thedoor it is not necessary to use the key because the turning of the lockcylinder by hand accomplishes that purpose. When locked, however, thedoor han die cannot be moved until the locking bolt withdrawn, and thisrequires the use of the key. The hand locking and key unlocking featureof the invention is not only applicable to automobile door handles andswitchhandles but is capable of general use where it is desired tofacilitate the locking operation by dispensing with the necessity forthe use of a key.

It will be noted that the screws 12 are entered through the inside ofthe door and thread into the base 10, thus making them inaccessible, andthis preyents theremoval of the base in order to open the door.

A stem 29 has a flat surtace3O to fit a corresponding flat surface inthe bore of thehandle grip 31 which is held thereon by neans of a screw32 passing through and :ount'ersunk in the end ot the grip and M liableto work loosig thie fiatsurtaces preventing thegr p from tnrnlngtothereby i. t not release the securing screw.

What I claim as new and desire to secure by Letters Patent is:

ll A 'movably mounted member, a lock cylinder mounted to turn in themember to lock the handle when turned in one direc; tion and to unlockit when turned in the other direction, means for locking the lockcylinderagainst turning in the direction for unlocking the member, and aremovable key fitting in the lock cylinder for disabling said lockingmeans and for turning the lock cylinder in either direction, said lockcylinder being capable of being turned by hand in the direction forlocking the member.

A member mounted to turn, a locking belt for locking the member againstturning, a lock cylinder mounted to turn in the memher and ha ingoperative connection with the locking bolt, tumblers in the lockcylinder for preventing it from turning, :1 re movable key forwithdrawing the tumblers and for turning the lock cylinder in onedirection for locking the member and in the other direction forunlocking the member, and hand operated means for turning the lockcylinder inthe direction for locking the member.

3. A. member mounted to turn, a lock cylinder mounted to turn therein tolock the member when turned in one direction and to unlock it whenturned in theother direction, means for locking the lock cylinder, aremovable key fitting in the lock cylinder to disable said locking meansand to turn the lock cylinder, and hand operated means or pable ofturning the lock cylinder only in the direction for locking themcn'iber.

L. A member mounted to turn, :1 lock bolt passing therethrough, astationary stop engaged by the lock bolt vtor locking the member, a lockcylinder mounted to turn in the member and having o ierative connectionwith the locking bolt for moving it into locking engagement when turnedin one direction and formoving it into unlocking position when turned inthe other direction, a tumbler in the lock cylinder. a stop onthcmembcrengaged by the tumbler for preventing the turning of the lock:ylinder in the direction for unlocking the member, a cam on the memberfor returning the tun'ibler when the lock cylinder is turned'in theother direction, and a key fitting in the lock cylinder tor withdrawingthe tumbler from engagement with the stop" and torftui'ning the lockcylinder in either dircctiomsaid lock cylin der being, capable of beingturned by hand in the direction for locking the member.

5. A member inounted to turn, a locking bolt passing therethrough andprovided With a transverse slot terminating in a stop, a stationary stopengaged by the locking 5 bolt for preventing the turning of the member,a cylindrical driver mounted to turn in the member, an eccentricallypositioned pin thereon fitting in the slot of the looking bolt andadapted to engage the stop thereof for 10 limiting its movement, a lookcylinder mounted to turn in the member and having driving connectionwith the driver, tuinblers 1n the lock cylinder for engaging theineinher, and a key fitting in the lock cylinder for Withdrawing thetumblers and for turning the lock cylinder and the driver to opture.

EDl/VARD N. JACOBI.

